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<field name="value">Martín, Óscar</field>
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<field name="value">Ahedo García, Virginia</field>
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<field name="value">Santos Martín, José Ignacio</field>
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<field name="value">Galán Ordax, José Manuel</field>
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<field name="value">Resistance spot welding (RSW) is a widespread manufacturing process in the automotive industry. There are different approaches for assessing the quality level of RSW joints. Multi-input-single-output methods, which take as inputs either the intrinsic parameters of the welding process or ultrasonic nondestructive testing variables, are commonly used. This work demonstrates that the combined use of both types of inputs can significantly improve the already competitive approach based exclusively on ultrasonic analyses. The use of stacking of tree ensemble models as classifiers dominates the classification results in terms of accuracy, F-measure and area under the receiver operating characteristic curve metrics. Through variable importance analyses, the results show that although the welding process parameters are less relevant than the ultrasonic testing variables, some of the former provide marginal information not fully captured by the latter.</field>
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<field name="value">This work was supported in part by the Spanish Ministry of Science, Innovation and Universities (Excellence Networks) under Grant HAR2017-90883-REDC and Grant RED2018-102518-T, and in part by the Junta de Castilla y León Consejería de Educación under Grant BDNS 425389. The work of Virginia Ahedo was supported by the European Social Fund.</field>
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<field name="value">IEEE Access. 2022, V. 10, p. 6518-6527</field>
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<field name="value">Resistance spot welding</field>
<field name="value">Quality control</field>
<field name="value">Welding parameters</field>
<field name="value">Ultrasonic testing</field>
<field name="value">Tree ensembles</field>
<field name="value">Stacking</field>
<field name="value">Welding</field>
<field name="value">Acoustics</field>
<field name="value">Classification algorithms</field>
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<field name="value">Comparative study of classification algorithms for quality assessment of resistance spot welding joints from preand post-welding inputs</field>
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